Title of Paper:Efficiency calibration of HPGe detector in a PGNAA system for the measurement of aqueous samples

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Affiliation of Author(s):材料科学与技术学院

Journal:APPLIED RADIATION AND ISOTOPES

Key Words:Gamma-ray efficiency calibration Large volumetric sample Effective solid angle Prompt gamma-ray neutron activation analysis

Abstract:In this work, a method was proposed for efficiency calibration of HPGe detector employed in a prompt gamma-ray neutron activation analysis (PGNAA) system for large aqueous sample analysis. Experimental measurements of a reference surface gamma-ray source were combined with efficiency transfer method to obtain efficiency of a volumetric source. Then efficiency curve over the energy range 0.5-8.5 MeV were determined with prompt gamma-rays of chlorine. To evaluate the performance of the calibration curve, an internal standard method was used to determine the aqueous sample containing manganese based on the calibration curve. The 7.058 MeV and 7.243 MeV manganese gamma-ray peaks were used to calculate the mass of manganese. The relative deviations of calculated values and actual value were 5.0% and 6.5%, respectively.

ISSN No.:0969-8043

Translation or Not:no

Date of Publication:2019-03-01

Co-author:Cheng, Can,F70205423,Li, Jiatong,Cai, Pingkun,Zhao, Dong,zdb,Wei, Zhiyong,wei zhiyong

Correspondence Author:hdq,Jia WB